Re: [PATCH v2 4/9] ALSA: hda/i915: Allow xe as match for i915_component_master_match
On 7/19/23 18:41, Maarten Lankhorst wrote:
xe is a new driver for intel GPU's that shares the sound related code with i915.
Don't allow it to be modprobed though; the module is not upstream yet and we should exclusively use the EPROBE_DEFER mechanism.
I can't figure out what this comment means.
how would the -EPROBE_DEFER mechanism help if the driver that will trigger a new probe is not upstream?
Not following at all what you intended to explain.
Signed-off-by: Maarten Lankhorst maarten.lankhorst@linux.intel.com
sound/hda/hdac_i915.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-)
diff --git a/sound/hda/hdac_i915.c b/sound/hda/hdac_i915.c index 961fcd3397f40..12c1f8d93499f 100644 --- a/sound/hda/hdac_i915.c +++ b/sound/hda/hdac_i915.c @@ -115,7 +115,8 @@ static int i915_component_master_match(struct device *dev, int subcomponent, hdac_pci = to_pci_dev(bus->dev); i915_pci = to_pci_dev(dev);
- if (!strcmp(dev->driver->name, "i915") &&
- if ((!strcmp(dev->driver->name, "i915") ||
subcomponent == I915_COMPONENT_AUDIO && connectivity_check(i915_pci, hdac_pci)) return 1;!strcmp(dev->driver->name, "xe")) &&
Hey,
On 2023-07-24 12:28, Pierre-Louis Bossart wrote:
On 7/19/23 18:41, Maarten Lankhorst wrote:
xe is a new driver for intel GPU's that shares the sound related code with i915.
Don't allow it to be modprobed though; the module is not upstream yet and we should exclusively use the EPROBE_DEFER mechanism.
I can't figure out what this comment means.
how would the -EPROBE_DEFER mechanism help if the driver that will trigger a new probe is not upstream?
Not following at all what you intended to explain.
What I mean is that there is code inside the current code that does request_module("i915"), the comment meant I didn't try to add any logic for request_module("xe"), as the driver is not merged yet.
Additionally I am removing the request_module logic, but this comment was written when I first tried the simple solution of request_module("xe").
Turns out telepathy is hard, and using -EPROBE_DEFER is much simpler. :-)
Cheers, ~Maarten
participants (2)
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Maarten Lankhorst
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Pierre-Louis Bossart